The effectiveness of an optimized extinction training is investigated in spider-fearful individuals. Participants will undergo a one-session standardized extinction training, either with or without occasional metal imagination of most feared apprehension towards spiders. The effectiveness of the training is measured by symptom improvement according to subjective ratings and behavioural avoidance tests one week later.
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Spider Phobia Questionnaire (SPQ)
Timeframe: Change from baseline to post-treatment (i.e., 7-9 days)
Behavioral Approach Test (BAT)
Timeframe: Change from baseline to post-treatment (i.e., 7-9 days)
Fear rating
Timeframe: Change from baseline to post-treatment (i.e., 7-9 days)